Update: Fox has dropped the plan for a rebate on the first-season set if you had already bought "Road to Sectionals." Instead, in addition to the complete-first-season set, is releasing a "Road to Regionals" set consisting of the nine episodes not included in "Road to Sectionals." That way, you can either buy the whole thing or just the episodes you don't already have -- so no rebate.

From Fox Home Video:

‘Gleeks’ and ‘Cheerios’ worldwide will celebrate September 14 when the groundbreaking musical comedy – GLEE: The Complete First Season – debuts on Blu-ray and DVD from Twentieth Century Fox Home Entertainment featuring all 22 one-hour episodes including the highly anticipated “The Power of Madonna” episode and other fan-favorites. From series creator Ryan Murphy (“Nip/Tuck”), GLEE: The Complete First Season Blu-ray and DVD is pitch-perfect with never-before-seen extras sure to hit the right note.

Continues after the jump, including a note about a "Gleebate" for fans who already bought the "Road to Sectionals" DVD.

“The show started out as a comedy musical about the underdog in all of us and has blossomed, largely due to the incredible support and passion from the fans that have embraced the show,” says Murphy. “When we developed the Blu-ray and DVD, we wanted to give those fans something special because they’ve been so great to us. There’s everything from a sing-along karaoke, to a behind-the-scenes look at our Madonna episode, to a dance lesson from our amazing choreographers. There’s even some all new Sue’s Corners which have never been seen before. It’s our ‘thank you’ to the Gleeks.”

Television’s most award-wining new series, GLEE was honored with a Golden Globe® for Best Television Series, Comedy or Musical; a Screen Actors Guild Award for Outstanding Performance by an Ensemble in a Comedy Series; and a People’s Choice Award for Favorite New TV Comedy.

The music from GLEE continues to shine with inventive renditions of past and present hit songs including Ike & Tina Turner’s “Proud Mary,” Madonna’s “Like A Virgin” and Lady Gaga’s “Bad Romance.”

GLEE: The Complete First Season Blu-ray and DVD is fully loaded with exclusive bonus materials and extended episodes, a sing-along karaoke, a behind-the-scenes look at “The Power of Madonna” episode, Glee Makeovers, never-before-seen “Sue’s Corners” and a dance tutorial titled “Staying in Step with Glee.”

GLEE: The Complete First Season will be available in a four-disc Blu-ray and seven-disc DVD set for the suggested retail price of $69.99 U.S/$89.99 Canada and $59.98 U.S./$69.98 Canada, respectively. Prebook is August 18. In addition, ‘Gleeks’ who purchased GLEE: Volume One: Road To Sectionals last winter can receive a special $10.00 “Gleebate” when they add GLEE: The Complete First Season to their collection.

A Musical TriumphTelevision’s most award-winning new series is also the highest-rated new scripted series of the season among Adults 18-49. The music from “GLEE” is an international sensation with both “Glee: The Music, Volume 1” and “Glee: The Music, Volume 2” topping charts in Australia, the U.K., New Zealand, Ireland and Canada. In the U.S., over five million songs have been downloaded, and both albums have been certified Gold for sales in excess of 500,000 units. Additionally, the show’s Madonna-themed mini-album soared to the No. 1 spot on Billboard’s Top 200 Album chart with an incredible 98,000 copies sold in its first week.

GleebateGLEE: The Complete First Season also includes an exceptional offer, a “Gleebate,” for fans that previously purchased GLEE: Volume One: Road To Sectionals. Those fans will receive a $10.00 rebate by simply completing a Mail-in Certificate and submitting it with proof of purchase for both titles. Visit www.gleebatedvd.com after June 1, 2010 for complete details.